Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868146 | Zeolite catalyst composition and synthesis method | Pochen Chu | 1989-09-19 |
| 4818509 | Continuous process for manufacturing crystalline zeolites in continuously stirred backmixed crystallizers | Francis G. Dwyer | 1989-04-04 |